<template>
    <div>
        <el-breadcrumb separator-class="el-icon-arrow-right" style="font-size: 16px;">
            <el-breadcrumb-item :to="{ path: '/sys-admin' }">
                <i class="el-icon-s-promotion"></i> 后台管理
            </el-breadcrumb-item>
            <el-breadcrumb-item>类别列表</el-breadcrumb-item>
        </el-breadcrumb>

        <el-divider></el-divider>

        <el-table :data="tableData" border style="width: 100%">
            <el-table-column prop="id" label="ID" width="60" align="center"></el-table-column>
            <el-table-column prop="name" label="名称" width="180" align="center"></el-table-column>
            <el-table-column prop="keywords" label="关键词" align="center"></el-table-column>
            <el-table-column prop="sort" label="排序序号" width="80" align="center"></el-table-column>
            <el-table-column label="是否启用" width="80" align="center">
                <template slot-scope="scope">
                    <el-switch
                            @change="handleChangeEnable(scope.row)"
                            v-model="scope.row.enable"
                            :active-value="1"
                            :inactive-value="0"
                            active-color="#13ce66"
                            inactive-color="#999">
                    </el-switch>
                </template>
            </el-table-column>
            <el-table-column label="显示在导航栏" width="120" align="center">
                <template slot-scope="scope">
                    <el-switch
                            @change="handleChangeDisplay(scope.row)"
                            v-model="scope.row.isDisplay"
                            :active-value="1"
                            :inactive-value="0"
                            active-color="#13ce66"
                            inactive-color="#999">
                    </el-switch>
                </template>
            </el-table-column>
            <el-table-column label="子级类别" width="100" align="center">
                <template slot-scope="scope">
                    <el-button size="mini" @click="showSubCategories(scope.row)"
                               :disabled="scope.row.isParent == 0">查看</el-button>
                </template>
            </el-table-column>
            <el-table-column label="操作" width="100" align="center">
                <template slot-scope="scope">
                    <el-button type="primary" icon="el-icon-edit" size="mini" circle
                               @click="handleEdit(scope.row)"></el-button>
                    <el-button type="danger" icon="el-icon-delete" size="mini" circle
                               :disabled="scope.row.isParent == 1"
                               @click="openDeleteConfirm(scope.row)"></el-button>
                </template>
            </el-table-column>
        </el-table>
        <div style="margin: 10px 0; float: right;" v-if="parentCategoryId != 0">
            <el-button size="mini" @click="backToRootList()">返回</el-button>
        </div>
    </div>
</template>

<script>
    export default {
        data() {
            return {
                parentCategoryId: 0,
                enableText: ['禁用', '启用'],
                displayText: ['不显示在导航栏', '显示在导航栏'],
                tableData: []
            }
        },
        methods: {
            backToRootList() {
                this.parentCategoryId = 0;
                this.loadCategoryList();
            },
            showSubCategories(category) {
                this.parentCategoryId = category.id;
                this.loadCategoryList();
            },
            handleChangeEnable(category) {
                let url = 'http://localhost:9080/category/' + category.id;
                if (category.enable == 1) {
                    url += '/enable';
                } else {
                    url += '/disable';
                }
                console.log('url = ' + url);
                this.axios
                    .create({'headers': {'Authorization': localStorage.getItem('jwt')}})
                    .post(url).then((response) => {
                    let responseBody = response.data;
                    if (responseBody.state == 20000) {
                        this.$message({
                            message: '操作成功，已经将【' + category.name + '】的状态改为【' + this.enableText[category.enable] + '】！',
                            type: 'success'
                        });
                    } else {
                        this.$message.error(responseBody.message);
                    }
                    this.loadCategoryList();
                });
            },
            handleChangeDisplay(category) {
                let url = 'http://localhost:9080/category/' + category.id;
                if (category.isDisplay == 1) {
                    url += '/display';
                } else {
                    url += '/hidden';
                }
                console.log('url = ' + url);
                this.axios
                    .create({'headers': {'Authorization': localStorage.getItem('jwt')}})
                    .post(url).then((response) => {
                    let responseBody = response.data;
                    if (responseBody.state == 20000) {
                        this.$message({
                            message: '操作成功，已经将【' + category.name + '】的状态改为【' + this.displayText[category.isDisplay] + '】！',
                            type: 'success'
                        });
                    } else {
                        this.$message.error(responseBody.message);
                    }
                    this.loadCategoryList();
                });
            },
            handleEdit(category) {
                let title = '提示';
                let message = '您正在尝试编辑【' + category.id + '-' + category.name + '】的类别详情，抱歉，此功能尚未实现……';
                this.$alert(message, title, {
                    confirmButtonText: '确定'
                });
            },
            openDeleteConfirm(category) {
                let title = '提示';
                let message = '此操作将永久删除【' + category.name + '】类别, 是否继续?';
                this.$confirm(message, title, {
                    confirmButtonText: '确定',
                    cancelButtonText: '取消',
                    type: 'warning'
                }).then(() => {
                    this.handleDelete(category);
                }).catch(() => {
                });
            },
            handleDelete(category) {
                let url = 'http://localhost:9080/category/' + category.id + '/delete';
                console.log('url = ' + url);
                this.axios
                    .create({'headers': {'Authorization': localStorage.getItem('jwt')}})
                    .post(url).then((response) => {
                    let responseBody = response.data;
                    if (responseBody.state != 20000) {
                        this.$message.error(responseBody.message);
                    }
                    this.loadCategoryList();
                });
            },
            loadCategoryList() {
                let url = 'http://localhost:9080/category/listByParentId?parentId='
                    + this.parentCategoryId;
                console.log('url = ' + url);
                this.axios
                    .create({'headers': {'Authorization': localStorage.getItem('jwt')}})
                    .get(url).then((response) => {
                    let responseBody = response.data;
                    if (responseBody.state == 20000) {
                        this.tableData = responseBody.data;
                    } else {
                        this.$message.error(responseBody.message);
                    }
                });
            }
        },
        mounted() {
            this.loadCategoryList();
        }
    }
</script>

<style scoped>

</style>